Iowa Code § 633.496: Foreign probated wills.

A will probated in any other state or country shall be admitted to probate in this state upon the production of a copy of the will and of the original record of probate. The will and record of probate must be authenticated by the certificate of the clerk of the court in which the will was probated, or, if there is no clerk, then by the certificate of the judge of the court, and by the seal of office of that officer if the officer or office has a seal.